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Water Resources Data System
Dept 3943
1000 E. University Ave.
Laramie, WY 82071

wrds@uwyo.edu
Ph (307) 766-6651
Fax (307) 766-3785


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United States           Natural Resources             Water and Climate Center
Department of           Conservation                          Portland, Oregon
Agriculture             Service

          S N O W  -  P R E C I P I T A T I O N    U P D A T E

              Based on Mountain Data from NRCS SNOTEL Sites
                    As of FRIDAY: MAY 11 , 2007
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030      .0     8.2     0     21.3    25.3    84
 COTTONWOOD CREEK         7600     5.8    15.6    37     25.6    33.2    77
 GRANITE CREEK            6770      .0     9.2     0     17.8    23.2    77
 GRASSY LAKE              7265    10.8    28.5    38     36.9    42.3    87
 GROS VENTRE SUMMIT       8750     3.5    10.9    32     13.9    16.1    86
 LEWIS LAKE DIVIDE        7850    11.5    30.6    38     32.9    42.8    77
 PHILLIPS BENCH           8200     8.3    25.6    32     25.1    34.2    73
 SALT RIVER SUMMIT        7600      -M     6.5      *      -M    22.4      *
 SNAKE RIVER STATION      6920      .0     7.6     0     23.7    26.4    90
 SPRING CREEK DIVIDE      9000    16.5    25.8    64     23.0    31.1    74
 THUMB DIVIDE             7980      .1    11.2     1     17.6    22.9    77
 TOGWOTEE PASS            9580    15.8    27.5    57     23.4    30.2    77
 TWO OCEAN PLATEAU        9240    22.5    31.0    73     25.6    33.5    76
 WILLOW CREEK             8450    10.9    26.8    41     34.5    39.3    88
                                                -----                  -----
                Basin wide percent of average     41                     80


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9275    19.2    25.6    75     22.2    24.6    90
 BLACK BEAR               8170    22.6    37.5    60     37.8    47.3    80
 CANYON                   8090      .0     8.3     0     17.9    18.6    96
 FISHER CREEK             9100    27.7    36.9    75     33.8    43.4    78
 MADISON PLATEAU          7750     9.2    20.8    44     24.5    31.7    77
 NORTHEAST ENTRANCE       7350      .0     4.4     0     15.0    15.7    96
 PARKER PEAK              9400    13.4    24.1    56     21.6    20.7   104
 SYLVAN LAKE              8420     5.1    21.3    24     24.9    26.1    95
 THUMB DIVIDE             7980      .1    11.2     1     17.6    22.9    77
 TWO OCEAN PLATEAU        9240    22.5    31.0    73     25.6    33.5    76
 WHISKEY CREEK            6800      .0    11.3     0     19.9    25.2    79
 WHITE MILL               8700    17.3    25.2    69     22.9    32.5    70
 WOLVERINE                7650      .0     4.3     0     13.1    16.2    81
                                                -----                  -----
                Basin wide percent of average     52                     83


WIND RIVER

 BURROUGHS CREEK          8750     7.0    11.3    62     15.1    20.4    74
 COLD SPRINGS             9630      .0     3.7     0     12.8    14.9    86
 DEER PARK                9700     9.7    17.6    55     21.0    28.3    74
 HOBBS PARK              10100    14.6    17.1    85     19.3    18.2   106
 LITTLE WARM              9370     1.6     8.7    18     14.2    17.8    80
 SOUTH PASS               9040     6.4    15.2    42     18.0    23.8    76
 ST. LAWRENCE ALT         8620      .7     4.4    16     13.0    13.1    99
 TOGWOTEE PASS            9580    15.8    27.5    57     23.4    30.2    77
 TOWNSEND CREEK           8700     1.7     6.7    25     15.8    16.6    95
                                                -----                  -----
                Basin wide percent of average     51                     83


BIGHORN BASIN

 BALD MTN.                9380    22.5    23.2    97     20.1    22.6    89
 BEAR TRAP MEADOW         8200      .0     1.2     0     13.1    12.0   109
 BLACKWATER               9780    20.0    28.8    69     23.6    26.1    90
 BONE SPRINGS DIV         9350    19.3    16.8   115     23.3    19.6   119
 EVENING STAR             9200    16.8    32.7    51     30.6    31.4    97
 GRAVE SPRINGS            8550     4.6     8.8    52     11.8    14.1    84
 KIRWIN                   9550    10.5    11.6    91     17.1    15.3   112
 MARQUETTE                8760     1.4     9.6    15     15.8    15.1   105
 MIDDLE POWDER            7760    10.4    12.0    87     12.7    16.9    75
 OWL CREEK                8975      .0     2.8     0      9.3     9.1   102
 POWDER RIVER PASS        9480     4.1     8.8    47     15.8    17.0    93
 SHELL CREEK              9580    15.8    16.4    96     17.3    18.0    96
 SYLVAN LAKE              8420     5.1    21.3    24     24.9    26.1    95
 SYLVAN ROAD              7120      .0     4.2     0     17.9    21.4    84
 TIMBER CREEK             7950      .0     2.9     0     12.1    11.8   103
 YOUNTS PEAK              8350     6.1    16.2    38     16.1    19.9    81
                                                -----                  -----
                Basin wide percent of average     63                     95


SHOSHONE RIVER

 BLACKWATER               9780    20.0    28.8    69     23.6    26.1    90
 EVENING STAR             9200    16.8    32.7    51     30.6    31.4    97
 KIRWIN                   9550    10.5    11.6    91     17.1    15.3   112
 MARQUETTE                8760     1.4     9.6    15     15.8    15.1   105
 SYLVAN LAKE              8420     5.1    21.3    24     24.9    26.1    95
 SYLVAN ROAD              7120      .0     4.2     0     17.9    21.4    84
 YOUNTS PEAK              8350     6.1    16.2    38     16.1    19.9    81
                                                -----                  -----
                Basin wide percent of average     48                     94


POWDER-TONGUE

 BEAR TRAP MEADOW         8200      .0     1.2     0     13.1    12.0   109
 BIG GOOSE                7990     9.3     9.8    95     19.0    14.0   136
 BONE SPRINGS DIV         9350    19.3    16.8   115     23.3    19.6   119
 BURGESS JUNCTION         7880    12.9    11.1   116     19.2    16.4   117
 CLOUD PEAK RESERVOIR     9860    15.3    15.2   101     20.1    18.6   108
 DOME LAKE                8880    11.7    11.3   104     22.0    18.0   122
 GRAVE SPRINGS            8550     4.6     8.8    52     11.8    14.1    84
 HANSEN SAWMILL           8360      .0     3.0     0     13.2    12.0   110
 MIDDLE POWDER            7760    10.4    12.0    87     12.7    16.9    75
 POWDER RIVER PASS        9480     4.1     8.8    47     15.8    17.0    93
 SUCKER CREEK             8880    13.4    11.0   122     22.5    18.7   120
 TIE CREEK                6870      .0     2.0     0     16.7    14.7   114
                                                -----                  -----
                Basin wide percent of average     91                    109


BELLE FOURCHE

 BLIND PARK               6890      .0     1.2     0     12.9    15.4    84
 COLE CANYON              5910      .0     3.7     0     14.2      -M      *
 NORTH RAPID CREEK        6130      .0     1.5     0     12.3    12.2   101
                                                -----                  -----
                Basin wide percent of average      0                     91


UPPER N. PLATTE RIVER

 COLUMBINE                9160      .0    15.3     0     24.3    30.2    80
 DIVIDE PEAK              8860     6.4    14.7    44     23.2    25.3    92
 ELK RIVER                8700      .2     9.7     2     21.1    24.0    88
 JOE WRIGHT              10120    22.3    24.2    92     27.5    31.6    87
 NORTH FRENCH CREEK      10130    23.4    33.6    70     28.8    31.2    92
 OLD BATTLE               9920    25.6    35.9    71     32.9    41.3    80
 SAGE CREEK BASIN         7850      .1     8.5     1     15.0    14.7   102
 SOUTH BRUSH CREEK        8440      .0     7.8     0     17.7    21.2    83
 TOWER                   10500    27.3    51.7    53     37.3    46.7    80
 WEBBER SPRINGS           9250     9.5    20.1    47     26.9    32.3    83
 WILLOW CREEK PASS        9540    14.8    12.1   122     16.2    16.7    97
                                                -----                  -----
                Basin wide percent of average     55                     86


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10220    18.5    24.6    75     24.5    28.3    87
 CASPER MTN.              7850     6.2    13.2    47     17.5    21.0    83
 DEADMAN HILL            10220    15.7    18.5    85     22.3    22.2   100
 DEER PARK                9700     9.7    17.6    55     21.0    28.3    74
 LAPRELE CREEK            8375      .1     4.6     2     16.5    17.7    93
 RENO HILL                8500     9.6    11.1    86     22.3    21.7   103
 ROACH                    9700    16.7    14.9   112     24.1    23.7   102
 SAND LAKE               10050    27.8    35.9    77     30.7    30.9    99
 SOUTH PASS               9040     6.4    15.2    42     18.0    23.8    76
 WINDY PEAK               7900      .8     2.6    31     16.1    14.7   110
                                                -----                  -----
                Basin wide percent of average     70                     92


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      .0     1.7     0     15.8    19.3    82
 DIVIDE PEAK              8860     6.4    14.7    44     23.2    25.3    92
 OLD BATTLE               9920    25.6    35.9    71     32.9    41.3    80
 SANDSTONE RS             8150      .7     5.4    13     18.0    22.8    79
 WHISKEY PARK             8950    13.7    27.6    50     27.4    35.1    78
                                                -----                  -----
                Basin wide percent of average     54                     82


UPPER GREEN RIVER

 BIG SANDY OPENING        9080      .5    10.3     5     13.0    16.8    77
 BLIND BULL SUM           8900    19.7    25.8    76     19.4    26.1    74
 EAST RIM DIVIDE          7930      .0    10.3     0     10.7    14.6    73
 ELKHART PARK G.S.        9400     4.8    10.4    46     13.9    17.0    82
 GROS VENTRE SUMMIT       8750     3.5    10.9    32     13.9    16.1    86
 KENDALL R.S.             7740      .0     5.5     0     14.0    17.2    81
 LOOMIS PARK              8240      .1    11.0     1     15.9    20.7    77
 NEW FORK LAKE            8340      .0     5.1     0     11.5    14.2    81
 SNIDER BASIN             8060      .0     9.1     0     13.8    19.1    72
 SPRING CREEK DIVIDE      9000    16.5    25.8    64     23.0    31.1    74
 TRIPLE PEAK              8500     8.5    19.0    45     26.6    29.7    90
                                                -----                  -----
                Basin wide percent of average     37                     79


LOWER GREEN RIVER

 HAMS FORK                7840      .0     2.5     0     12.1    15.4    79
 HEWINTA                  9500      .0     5.9     0     15.7    18.6    84
 HICKERSON PARK           9100      .0     3.1     0     14.1    11.0   128
 HOLE-IN-ROCK             9150      .0     2.6     0     12.7    10.5   121
 INDIAN CREEK             9425    12.0    25.0    48     20.7    30.5    68
 KELLEY R.S.              8180     1.5    10.5    14     18.1    24.4    74
 STEEL CREEK PARK        10100    13.6    18.2    75     16.9    21.2    80
                                                -----                  -----
                Basin wide percent of average     40                     84


UPPER BEAR RIVER

 BUG LAKE                 7950     3.5    12.9    27     17.6    23.3    76
 HAYDEN FORK              9100      .0     8.9     0     22.5    26.2    86
 KELLEY R.S.              8180     1.5    10.5    14     18.1    24.4    74
 LILY LAKE                9050      .0     7.7     0     17.8    22.1    81
 MONTE CRISTO             8960     8.6    24.3    35     25.0    31.5    79
 SALT RIVER SUMMIT        7600      -M     6.5      *      -M    22.4      *
 TRIAL LAKE               9960     7.5    24.1    31     23.0    30.7    75
                                                -----                  -----
                Basin wide percent of average     24                     78

-----------------------------------------------------------------------------


 -M   = Missing data
  *   = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and

Total Precipitation values

If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.

The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.

The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.

Contact your state water supply staff for assistance.

Reference period for average conditions is 1971-2000.

Provisional data, subject to revision.